Water-closet valve.



No. 649,089. Patented May 8, 1900.

R. S. WATSON. WATER CLOSET VALVE.

(Application med sept. 2, 189s.;

(No Model.)

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NITED STATES PATENT EEICE.

ROBERT s. wATsoN, or BAY CITY, MICHIGAN.

WATER-c Los ET VALVE.

s'PEciFIcATIoN fol-ming para cf Letters Patent No. 649,089, dated May s, 1960. Application iiled September 2,1898. Serial No. 690,093. (No model.)

To @ZZ whom t may concern: I

Be it known that I, ROBERT S. WATSON, a citizen of the United States, residing at Bay City, in the county of Bay and State of Michigan, have invented certain new and useful Improvements in Water-Closet Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to flushing-valves for water-closets, and more particularly to that class of water-closet valves adapted to be interposed directly between the water-main and the closet-bowl.

The general principle of operation of my present improved valve is as follows: An airc'hamber located above the water-regulating valve contains a piston which is connected to the water-valve by a rod and is normally pressed to the top of the air-'chamber' byva spring. The air-chamber is open to the atmosphere at the bottom, and a check-valve (shown in Fig. 7) in the top ofthe air-chamber admits air above .the piston, but prevents its egress. A small opening in the top of the'air-chamber, the size of which can be easily regulated, permits air to escape slowly from above the piston. When the piston is depressed by pushing down the rod, the space above the piston is filled with air, which gradually discharges through the small opening as the piston is slowly pushed upward by the spring.` Thus a slow closing of the water-regulating valve is effected. 1 v

This invention relates solely to certain improved details of construction and arrangement of the watercontrolling mechanism whereby I am enabled to accomplish the objects of my invention,which are, first, t'o secure prompt and positive closure of the relief-valve upon removing pressure from the valve-stem second, to cushion the main valve at the top of its travel and prevent noise when working under high pressure; third, to secure a positive but quiet iiow of water into the bowl for a brief period after flushing. The various means by which I attain these objects are shown in the accompanying drawings, in which- Figure 1 is a vertical sectional view of the casing, showing the valve open. Fig. 2 is an enlarged detail of the valve-stem with valves in place. Fig. 3 is a side view of the valvechest and compression-chamber. Fig. 4 is a top view of the parts shown in Fig. 3. Fig.

5 is a side View, partly in section, of the main and relief valves. Fig. 6 is a to'p view of the same. Fig. 7 is an enlarged detail of the top of the air-chamber, showing the valves for admitting and discharging air.

Throughout the several views similar hg'- ures ofreference designate similar parts.

1 is the air-chamber, in which operates the piston or plunger 2.

3 is a water-chamber having an inlet 4 and an outlet or discharge 5.

The valve mechanism forming the subject of my present invention is inclosed inthe water compartments' and is operated conjointly with the airpiston by a central valverod 6.

7 is a'cylindrical valve-chest secured by vscrew-threads or otherwise in the water-chamber 3, as shown in Fig. 1.

8 is a compression-chamber located above the valve-chest and preferably made in one piece with it, discharge openings or ports 9V being provided between the chest and chamber. The chamber is also provided with a small discharge-opening 8a above the ports 9. A hollow cylindrical valve 10, attached to the valve-rod G and movable thereby longitudi- -nally within the chest 7, opens or closes the ports 9. At the lower end of the valve 10 are water-inlets 11,also opened and closed by the movement of the valve in the chest 7. v The bottom of valve 10 has water-inlets 10a and a cap 12, the head of which is provided with a water-inlet 122M and forms a'seat for the relief-valve 13. A nut or washer 14a is adjustably attached by screw-threads or otherwise to the valve-rod 6, and a spring 14, extending between the washer and the bottom of valve 10, closes the relief-valve when the pressure is removed from the valve-rod 6.

The proportions of the valve l0 and the valve-chest 7 are such that the water-inlets 11 are still partly open when the dischargeports 9 are closed, and the inlets 11 close when the top of the valve passes and closes the small slit 8l in the chamber 8.

The top rim of the cap 12 is provided with a ring of rubber or other suitable packing 15 IOO to form aWater-tight joint between the valve lO and the bottom of the valve-chest 7 when the valve is closed.

The operation of the valve is as follows: Depressing the rod G compresses the spring 14 and opens the relief-valve 13. Vater under pressure of the main enters the valve l0 through the openings 12L and l0, iilling the valve and balancing the pressure on it. Further depression of the rod G lowers the valve l0 within the chest 7 opening the inlet-ports 11 and discharge-ports 9, permitting the free pas sage of flushingwater therethrough. Upon releasing the pressure on the -valve-rod the spring I4 expands, closing the relief-valve. After flushing the escape of air from above the spring-pressed air-piston 2 slowly raises the valve-stem. The valve l0 rises, closing thedischarge-ports 9, thus ending the flush. lVater entering the inlet ll, which is still partly open, fills the valve and compression chamber, augmenting the pressure therein and cushioning the valve. For a brief period after closing the ports 9, while the valve rises in the chamber 8, a certain quantity of water is discharged through the orifice 8f, refilling the closet-bowl. Further rise of the valve lO closes the opening 8a and the inlets 1l.

By cushioning the top of the valve in chamber 8, as described, I avoid all pounding or jar noticeable in uncushioned valves when operating under high pressure.

IIeretoi'ore it has been my practice to allow the relief-valve 13 to remain open until the flush had ceased and the main valve closed, permitting the water-pressure to close the relief-valve. Under light pressures this arrangement was satisfactory; but when subjected to heavy pressure it closed too suddenly, causing a sharp noise. Therefore I have applied the spring 1l to the valvenod,

whereby the relief-valve is mechanically closed before the main valve lO closes, thus charge of water; a hollow cylindrical valve longitudinally movable within said valveseat, having Water-inlets at its lower end and being open at its upper end; and an auxiliary valve attached to the lowerend of the hollow `cylindrical valve, substantially as described.

2. In a water-regulating device for pneumatically-controlled flushing-valves the removable cylindrical valve-seat having outletopenings 9, and the compression-cl1amber 8 having openings 8 therein; in combination with the hollow cylindrical valve 10 having inlet-openings 1l; and an auxiliary valve carried by said valve l0, all arranged substantially as described and for the purposes set forth.

3. In a flushing device of the kindidel scribed a hollow cylindrical valve having lateral openings near its lower end, a perforated base, a cap for said base having a water-inlet, a valve to close said inlet, and means substantially as described for closing the valve. In testimony whereot` I aiiix my signature in presence of two witnesses.

ROBERT S. XVATSON. lVitnesses: i

RAY FRALICK, J. W. MCMA'IH. 

